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Liquid water at 453K and 1002 kPA has an internal energy of 762 kJ/kg and a density of 890 kg/m^3 a) what is the enthalpy (per weight)? b) We change the state to 573K and 1500 kPA. The internal energy is now 2784 kJ/kg and the specific volume 169.7 cm^3/g. What is the change in enthalpy (delta H) and change in internal energy (delta U) (per weight)?
Enter question here...A 100g on object is suspended from a spring. When 40 g are added the soring stretches an additional 5.0 cm. What is the angular frequency and period of the oscillations
Why is the not-for-profit sector of the economy important?
Sodium and water react according to the equation 2Na +2H2O=>2NaOH + H2. What number of moles of H2 will be produced when 4.0 mol Na is added to 3.3 mol H2O
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 72 cm and is wrapped around the top at a place where its radius is 2.3 cm. The thickness of the string is neg..
How is HR structured in your organization?
A steel wire having a mass of 3.50 g and a length of 1.00 m is fixed at both ends and has a tension of 1010 N. Find the frequency of the third harmonic
The figure below shows a three-particle system, with masses m1 = 2.5 kg, m2 = 4.0 kg, and m3 = 9.0 kg. (a) What are the coordinates of the center of mass?
During a solar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Moon between the Earth and the Sun. What force is exerted by the Sun on the Earth
Identify key companies in the emerging market of digital healthcare
A standard 100 W (120 V) lightbulb contains a 9.40 cm-long tungsten filament. The high-temperature resistivity of tungsten is 9.0*10^-7Om. What is the diameter of the filament?
A 2.0 N force is applied to the plunger of a hypodermic needle. The diameter of the plunger is 1.2 cm and that of the needle is 0.30 mm. With what force does the fluid leave the needle
A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. At what height from the ground will the two objects first meet
a small bar magnet experiences a 2.1 x 10^-2N*m torque when the axs of the magnet is at 45 degree to a 6.00 *10^-2 T magnetic field. What is the magnitude of its magnetic dipole moment
A block is released from rest at the top of a frictionless ramp (inclined plane) that makes an angle of 25° with respect to horizontal. What is the length of the ramp D1
An electromagnet produces a magnetic field of 0.550 T in a cylindrical region of radius 2.40 cm between its poles. What magnitude of force is exerted on the wire
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 35 degree angle. The block's initial speed is 10 m/s. What vertical height does the block reach above its starting point
Water flows through a fire hose of diameter 7.09 cm at a rate of 1.2 x10-2 m3/s. What is the velocity with which the water exits the hose
a bullet moving horizontally to the right (+x direction) with a speed of 500 m/s strikes a sandbagk, What is the average acceleration in m/s of the bullet
An object travels halfway around a circle at a constant instantaneous speed v. What is the magnitude of its average velocity during this time interval
A car engine with mass = 220 kg hangs from a light chain that is linked at ring O to two other light chains as shown
An RC circuit is connected across a DC voltage source through an open switch. The switch is closed at t = 0 s. Which of the following is a correct statement regarding the circuit
A lamp is placed 10 cm in front of a concave spherical mirror that forms an image of the filament on a screen placed 3.0 m from the mirror. how tall is the image
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